catalog\controller\account\address.php
есть
как привязать до тела письма 'address' => str_replace(array("\r\n", "\r", "\n"), '<br />', preg_replace(array("/\s\s+/", "/\r\r+/", "/\n\n+/"), '<br />', trim(str_replace($find, $replace, $format)))),
catalog\model\account\customer.php
// Send to main admin email if new account email is enabled
if (in_array('account', (array)$this->config->get('config_mail_alert'))) {
$message = $this->language->get('text_signup') . "\n\n";
$message .= $this->language->get('text_website') . ' ' . html_entity_decode($this->config->get('config_name'), ENT_QUOTES, 'UTF-8') . "\n";
$message .= $this->language->get('text_firstname') . ' ' . $data['firstname'] . "\n";
$message .= $this->language->get('text_lastname') . ' ' . $data['lastname'] . "\n";
$message .= $this->language->get('text_customer_group') . ' ' . $customer_group_info['name'] . "\n";
$message .= $this->language->get('text_email') . ' ' . $data['email'] . "\n";
$message .= $this->language->get('text_telephone') . ' ' . $data['telephone'] . "\n";